Camera optical lens

ABSTRACT

The present disclosure relates to the field of optical lenses and provides a camera optical lens sequentially including, from an object side to an image side, first to seventh lenses. The camera optical lens satisfies following conditions: 1.80≤f4/f≤5.00; −1.50≤f6/f7≤−1.00; and 1.20≤d8/d9≤1.60, where f denotes a focal length of the camera optical lens; f4, f6 and f7 denote focal lengths of the fourth, sixth and seventh lenses, respectively; d8 denotes an on-axis distance from an image side surface of the fourth lens to an object side surface of the fifth lens; and d9 denotes an on-axis thickness of the fifth lens. The camera optical lens according to the present disclosure can achieve high optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, and moreparticularly, to a camera optical lens suitable for handheld terminaldevices, such as smart phones or digital cameras, and camera devices,such as monitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera optical lens is increasingly higher, but in general thephotosensitive devices of camera optical lens are nothing more thanCharge Coupled Devices (CCDs) or Complementary Metal-Oxide SemiconductorSensors (CMOS sensors). As the progress of the semiconductormanufacturing technology makes the pixel size of the photosensitivedevices become smaller, plus the current development trend of electronicproducts towards better functions and thinner and smaller dimensions,miniature camera optical lenses with good imaging quality have become amainstream in the market. In order to obtain better imaging quality, thelens that is traditionally equipped in mobile phone cameras adopts athree-piece or four-piece lens structure. Also, with the development oftechnology and the increase of the diverse demands of users, and as thepixel area of photosensitive devices is becoming smaller and smaller andthe requirement of the system on the imaging quality is becomingincreasingly higher, a five-piece or six-piece or seven-piece lensstructure gradually emerges in lens designs. There is a demand for anultra-thin, wide-angle camera lens having excellent optical features.

SUMMARY

In view of the problems, the present disclosure aims to provide a cameraoptical lens, which can achieve high imaging performance whilesatisfying requirements for ultra-thin, wide-angle lenses.

In an embodiment, the present disclosure provides a camera optical lens.The camera optical lens sequentially includes, from an object side to animage side: a first lens having a positive refractive power; a secondlens having a negative refractive power; a third lens having a negativerefractive power; a fourth lens having a positive refractive power; afifth lens having a negative refractive power; a sixth lens having apositive refractive power; and a seventh lens having a negativerefractive power. The camera optical lens satisfies followingconditions: 1.80≤f4/f≤5.00; −1.50≤f6/f7≤−1.00; and 1.20≤d8/d9≤1.60,where f denotes a focal length of the camera optical lens; f4 denotes afocal length of the fourth lens; f6 denotes a focal length of the sixthlens; f7 denotes a focal length of the seventh lens; d8 denotes anon-axis distance from an image side surface of the fourth lens to anobject side surface of the fifth lens; and d9 denotes an on-axisthickness of the fifth lens.

The present disclosure has advantageous effects in that the cameraoptical lens according to the present disclosure has excellent opticalcharacteristics and is ultra-thin, wide-angle, making it especiallysuitable for high-pixel camera optical lens assembly of mobile phonesand WEB camera optical lenses formed by camera elements such as CCD andCMOS.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiment can be better understood withreference to the following drawings. The components in the drawings arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure. Moreover,in the drawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in

FIG. 1;

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9; and

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DESCRIPTION OF EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

Referring to FIG. 1, the present disclosure provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 according to Embodiment1 of the present disclosure. The camera optical lens 10 includes 7lenses. Specifically, the camera optical lens 10 sequentially includes,from an object side to an image side, an aperture S 1, a first lens L1,a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, asixth lens L6, and a seventh lens L7. An optical element such as a glassfilter (GF) can be arranged between the seventh lens L7 and an imageplane Si.

A focal length of the camera optical lens 10 is defined as f, and afocal length of the fourth lens L4 is defined as f4. The camera opticallens 10 should satisfy a condition of 1.80≤f4/f≤5.00. The appropriatedistribution of the refractive power leads to better imaging quality anda lower sensitivity. As an example, 2.26≤f4/f≤4.90.

A focal length of the sixth lens L6 is defined as f6, and a focal lengthof the seventh lens L7 is defined as P. The camera optical lens 10should satisfy a condition of −1.50≤f6/f7≤−1.00. This leads to theeffective distribution of the refractive powers of the sixth lens L6 andthe seventh lens L7 and facilitates correction of aberrations of theoptical system, thereby improving imaging quality. As an example,−1.47≤f6/f7≤−1.09.

An on-axis distance from an image side surface of the fourth lens L4 toan object side surface of the fifth lens L5 is defined as d8, and anon-axis thickness of the fifth lens L5 is defined as d9. The cameraoptical lens 10 should satisfy a condition of 1.20≤d8/d9≤1.60. When thecondition is satisfied, the total length of the optical system can bereduced, thereby achieving ultra-thin lenses. As an example,1.21≤d8/d9≤1.58.

When the focal length of the camera optical lens, the focal lengths ofthe lenses, the on-axis distances between an image side surface and anobject side surfaces of the lenses, and the on-axis thicknesses of thelenses satisfy the above conditions, and the camera optical lens 10 cansatisfy design requirements for high performance and a low TTL (a totaloptical length from an object side surface of the first lens L1 to animage plane of the camera optical lens 10 along an optic axis).

A curvature radius of the object side surface of the fourth lens L4 isdefined as R7, and a curvature radius of an image side surface of thefourth lens L4 is defined as R8. The camera optical lens 10 shouldsatisfy a condition of −0.80≤(R7+R8)/(R7−R8)≤−0.10, which specifies ashape of the fourth lens L4. This can facilitate correction of anoff-axis aberration with development towards ultra-thin, wide-anglelenses. As an example, −0.75≤(R7+R8)/(R7−R8)≤−0.10.

A curvature radius of an object side surface of the second lens L2 isdefined as R3, and a curvature radius of an image side surface of thesecond lens L2 is defined as R4. The camera optical lens 10 shouldsatisfy a condition of 3.00≤(R3+R4)/(R3−R4)≤15.00, which specifies ashape of the second lens L2. When the condition is satisfied, thedeflection of light passing through the lens can be alleviated, andaberrations can be effectively reduced. As an example,4.43≤(R3+R4)/(R3−R4)≤14.49.

A focal length of the first lens L1 is defined as f1. The camera opticallens 10 should satisfy a condition of 0.52≤f1/f≤1.79, which specifies aratio of the refractive power of the first lens L1 to the focal lengthof the camera optical lens 10. When the condition is satisfied, thefirst lens can have an appropriate positive refractive power, therebyfacilitating reducing aberrations of the system while facilitatingdevelopment towards ultra-thin, wide-angle lenses. As an example,0.83≤f1/f≤1.43.

A curvature radius of the object side surface of the first lens L1 isdefined as R1, and a curvature radius of an image side surface of thefirst lens L1 is defined as R2. The camera optical lens 10 shouldsatisfy a condition of −4.86≤(R1+R2)/(R1−R2)≤−1.19. This can reasonablycontrol a shape of the first lens L1, so that the first lens L1 caneffectively correct spherical aberrations of the system. As an example,−3.04≤(R1+R2)/(R1−R2)≤−1.48.

An on-axis thickness of the first lens L1 is defined as d1, and thetotal optical length from the object side surface of the first lens L1to an image plane of the camera optical lens 10 along an optic axis isdefined as TTL. The camera optical lens 10 should satisfy a condition of0.07≤d1/TTL≤0.22. This can facilitate achieving ultra-thin lenses. As anexample, 0.12≤d1/TTL≤0.18.

The focal length of the camera optical lens 10 is f, and a focal lengthof the second lens L2 is f2. The camera optical lens 10 furthersatisfies a condition of −17.04≤f2/f≤−2.22. By controlling the negativerefractive power of the second lens L2 within the reasonable range,correction of aberrations of the optical system can be facilitated. Asan example, −10.65≤f2/f≤−2.78.

An on-axis thickness of the second lens L2 is defined as d3. The cameraoptical lens 10 should satisfy a condition of 0.02≤d3/TTL≤0.06. This canfacilitate achieving ultra-thin lenses. As an example, 0.03≤d3/TTL≤0.05.

The focal length of the camera optical lens 10 is f, and the focallength of the third lens L3 is f3. The camera optical lens 10 furthersatisfies a condition of −12.70≤f3/f≤−2.67. The appropriate distributionof the refractive power leads to better imaging quality and a lowersensitivity. As an example, −7.94≤f3/f≤−3.34.

A curvature radius of an object side surface of the third lens L3 isdefined as R5, and a curvature radius of an image side surface of thethird lens L3 is defined as R6. The camera optical lens 10 shouldsatisfy a condition of 1.17≤(R5+R6)/(R5−R6)≤4.73. This can reasonablycontrol a shape of the third lens L3, thereby facilitating shaping ofthe third lens L3. When the condition is satisfied, the deflection oflight passing through the lens can be alleviated, and aberrations can beeffectively reduced. As an example, 1.87≤(R5+R6)/(R5−R6)≤3.79.

An on-axis thickness of the third lens L3 is defined as d5. The cameraoptical lens 10 should satisfy a condition of 0.02≤d5/TTL≤0.06. This canfacilitate achieving ultra-thin lenses. As an example, 0.03≤d5/TTL≤0.05.

The focal length of the camera optical lens 10 is f, and the focallength of the fifth lens L5 is f5. The camera optical lens 10 furthersatisfies a condition of −109.16≤f5/f≤−2.43. This condition caneffectively make a light angle of the camera optical lens 10 gentle andreduce the tolerance sensitivity. As an example, −68.23≤f5/f≤−3.04.

A curvature radius of the object side surface of the fifth lens L5 isdefined as R9, and a curvature radius of the image side surface of thefifth lens L5 is defined as R10. The camera optical lens 10 shouldsatisfy a condition of 3.34≤(R9+R10)/(R9−R10)≤53.34, which specifies ashape of the fifth lens L5. This can facilitate correction of anoff-axis aberration with development towards ultra-thin, wide-anglelenses. As an example, 5.35≤(R9+R10)/(R9−R10)≤42.67.

An on-axis thickness of the fifth lens L5 is defined as d9. The cameraoptical lens 10 should satisfy a condition of 0.02≤d9/TTL≤0.08. When thecondition is satisfied, the total length of the optical system can bereduced, thereby achieving ultra-thin lenses. As an example,0.04≤d9/TTL≤0.06.

The focal length of the camera optical lens 10 is f, and the focallength of the sixth lens L6 is f6. The camera optical lens 10 furthersatisfies a condition of 0.38≤f6/f≤1.39. The appropriate distribution ofthe refractive power leads to better imaging quality and a lowersensitivity. As an example, 0.62≤f6/f≤1.11.

A curvature radius of an object side surface of the sixth lens L6 isdefined as R11, and a curvature radius of an image side surface of thesixth lens L6 is defined as R12. The camera optical lens 10 shouldsatisfy a condition of −1.54≤(R11+R12)/(R11−R12)≤−0.50, which specifiesa shape of the sixth lens L6. This can facilitate correction of anoff-axis aberration with development towards ultra-thin, wide-anglelenses. As an example, −0.96≤(R11+R12)/(R11−R12)≤−0.63.

An on-axis thickness of the sixth lens L6 is defined as d11. The cameraoptical lens 10 should satisfy a condition of 0.04≤d11/TTL≤0.13. Thiscan facilitate achieving ultra-thin lenses. As an example,0.06≤d11/TTL≤0.10.

The focal length of the camera optical lens 10 is f, and a focal lengthof the seventh lens L7 is defined as f7. The camera optical lens 10should satisfy a condition of −1.31≤f7/f≤−0.40. The appropriatedistribution of the refractive power leads to better imaging quality anda lower sensitivity. As an example, −0.82≤f7/f≤−0.50.

A curvature radius of an object side surface of the seventh lens L7 isdefined as R13, and a curvature radius of an image side surface of theseventh lens L7 is defined as R14. The camera optical lens 10 furthersatisfies a condition of 0.07≤(R13+R14)/(R13−R14)≤0.32, which specifiesa shape of the seventh lens L7. This can facilitate correction of anoff-axis aberration with development towards ultra-thin, wide-anglelenses. As an example, 0.11≤(R13+R14)/(R13−R14)≤0.26.

An on-axis thickness of the seventh lens L7 is defined as d13. Thecamera optical lens 10 should satisfy a condition of 0.03≤d13/TTL≤0.11.This can facilitate achieving ultra-thin lenses. As an example,0.06≤d13/TTL≤0.09.

A combined focal length of the first lens L1 and the second lens L2 isdefined as f12. The camera optical lens 10 further satisfies a conditionof 5.77≤f12/f≤9.00. This can eliminate aberration and distortion of thecamera optical lens 10, suppress the back focal length of the cameraoptical lens 10, and maintain miniaturization of the camera lens systemgroup. As an example, 6.49≤f12/f≤8.25.

In this embodiment, the total optical length TTL of the camera opticallens 10 is smaller than or equal to 7.37 mm, which is beneficial forachieving ultra-thin lenses. As an example, the total optical length TTLof the camera optical lens 10 is smaller than or equal to 7.04 mm.

In this embodiment, an F number of the camera optical lens 10 is smallerthan or equal to 1.61. The camera optical lens 10 has a large apertureand better imaging performance. As an example, the F number of thecamera optical lens 10 is smaller than or equal to 1.60.

With such design, the total optical length TTL of the camera opticallens 10 can be made as short as possible, and thus the miniaturizationcharacteristics can be maintained.

In the following, examples will be used to describe the camera opticallens 10 of the present disclosure. The symbols recorded in each examplewill be described as follows. The focal length, on-axis distance,curvature radius, on-axis thickness, inflexion point position, andarrest point position are all in units of mm.

TTL: Optical length (the total optical length from the object sidesurface of the first lens L1 to the image plane of the camera opticallens along the optic axis) in mm.

In an example, inflexion points and/or arrest points can be arranged onthe object side surface and/or image side surface of the lens, so as tosatisfy the demand for the high quality imaging. The description belowcan be referred to for specific implementations.

Table 1 and Table 2 show design data of the camera optical lens 10according to Embodiment 1 of the present disclosure.

TABLE 1 R d nd νd S1 ∞ d0= −0.695 R1 2.391 d1= 0.967 nd1 1.5450 ν1 55.81R2 8.521 d2= 0.091 R3 4.678 d3= 0.255 nd2 1.6610 ν2 20.53 R4 3.315 d4=0.747 R5 13.812 d5= 0.236 nd3 1.6610 ν3 20.53 R6 7.163 d6= 0.056 R711.792 d7= 0.613 nd4 1.5450 ν4 55.81 R8 −26.707 d8= 0.449 R9 4.015 d9=0.320 nd5 1.6359 ν5 23.82 R10 2.970 d10= 0.263 R11 2.615 d11= 0.516 nd61.5450 ν6 55.81 R12 −19.942 d12= 0.651 R13 −4.591 d13= 0.466 nd7 1.5346ν7 55.69 R14 3.479 d14= 0.281 R15 ∞ d15= 0.210 ndg 1.5168 νg 64.17 R16 ∞d16= 0.558

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface; a central curvature radiusfor a lens;

R1: curvature radius of the object side surface of the first lens L1;

R2: curvature radius of the image side surface of the first lens L1;

R3: curvature radius of the object side surface of the second lens L2;

R4: curvature radius of the image side surface of the second lens L2;

R5: curvature radius of the object side surface of the third lens L3;

R6: curvature radius of the image side surface of the third lens L3;

R7: curvature radius of the object side surface of the fourth lens L4;

R8: curvature radius of the image side surface of the fourth lens L4;

R9: curvature radius of the object side surface of the fifth lens L5;

R10: curvature radius of the image side surface of the fifth lens L5;

R11: curvature radius of the object side surface of the sixth lens L6;

R12: curvature radius of the image side surface of the sixth lens L6;

R13: curvature radius of the object side surface of the seventh lens L7;

R14: curvature radius of the image side surface of the seventh lens L7;

R15: curvature radius of an object side surface of the optical filterGF;

R16: curvature radius of an image side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lenses;

d0: on-axis distance from the aperture S1 to the object side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image side surface of the first lens L1 tothe object side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image side surface of the second lens L2to the object side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image side surface of the third lens L3 tothe object side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image side surface of the fourth lens L4to the object side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image side surface of the fifth lens L5to the object side surface of the sixth lens L6;

d11: on-axis thickness of the sixth lens L6;

d12: on-axis distance from the image side surface of the sixth lens L6to the object side surface of the seventh lens L7;

d13: on-axis thickness of the seventh lens L7;

d14: on-axis distance from the image side surface of the seventh lens L7to the object side surface of the optical filter GF;

d15: on-axis thickness of the optical filter GF;

d16: on-axis distance from the image side surface of the optical filterGF to the image plane;

nd: refractive index of d line;

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

nd5: refractive index of d line of the fifth lens L5;

nd6: refractive index of d line of the sixth lens L6;

nd7: refractive index of d line of the seventh lens L7;

ndg: refractive index of d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

v7: abbe number of the seventh lens L7

vg: abbe number of the optical filter GF.

Table 2 shows aspheric surface data of respective lens in the cameraoptical lens 10 according to Embodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10R1 −6.2190E−02 −1.8330E−04 3.4177E−03 −6.1285E−03 7.2891E−03 R2−1.6439E+01 −4.9708E−02 5.0118E−02 −3.3692E−02 1.4738E−02 R3  4.1808E+00−8.5737E−02 6.2553E−02 −2.1309E−02 −1.0866E−02  R4  3.5757E+00−4.7288E−02 2.0459E−02  1.9840E−02 −5.7826E−02  R5  6.6952E+01−3.2461E−02 −3.5052E−03  −1.0305E−04 1.4161E−02 R6 −3.2198E+01−2.1647E−02 −2.8725E−02   5.3913E−02 −4.6167E−02  R7  2.0153E+01−3.0275E−02 −1.3858E−02   2.8748E−03 4.1728E−02 R8  6.0376E+01−4.0433E−02 2.6811E−02 −5.6267E−02 6.3608E−02 R9 −2.6407E+01 −4.8109E−027.0223E−02 −5.8531E−02 2.8054E−02 R10 −1.9596E+01 −8.9626E−02 7.5038E−02−3.9268E−02 1.0989E−02 R11 −9.1461E+00 −1.1892E−02 −2.1018E−02  1.4800E−02 −6.3386E−03  R12  4.0061E+01  4.4565E−02 −4.9467E−02  2.3928E−02 −7.1938E−03  R13 −5.9168E−01 −8.7411E−02 2.3647E−02−1.7610E−03 −1.1223E−04  R14 −1.5882E+01 −5.7998E−02 2.0122E−02−4.6306E−03 7.3459E−04 Aspherical surface coefficients A12 A14 A16 A18A20 R1 −5.5252E−03  2.6066E−03 −7.4889E−04   1.1897E−04 −8.2760E−06 R2−3.6822E−03  1.1844E−04 2.1223E−04 −5.7545E−05  4.9179E−06 R3 1.9309E−02 −1.2071E−02 4.1504E−03 −7.6934E−04  6.0472E−05 R4 6.7876E−02 −4.8107E−02 2.1079E−02 −5.2606E−03  5.7537E−04 R5−3.6275E−02  3.5652E−02 −1.7840E−02   4.5178E−03 −4.5075E−04 R6 1.8563E−02 −4.1608E−03 1.0298E−03 −2.9897E−04  3.8729E−05 R7−6.0606E−02  3.8204E−02 −1.2484E−02   2.0811E−03 −1.4078E−04 R8−4.5274E−02  2.0825E−02 −5.9445E−03   9.5274E−04 −6.4873E−05 R9−8.6888E−03  1.6025E−03 −1.3362E−04  −2.8405E−06  9.0957E−07 R10−1.4111E−03 −1.1062E−04 7.3997E−05 −1.0960E−05  5.7020E−07 R11 1.4323E−03 −1.5457E−04 4.3484E−07  1.5972E−06 −1.0905E−07 R12 1.3882E−03 −1.7393E−04 1.3925E−05 −6.5441E−07  1.3772E−08 R13 2.7484E−05 −1.6301E−06 1.3984E−08  2.0417E−09 −5.8484E−11 R14−8.6272E−05  7.3108E−06 −4.0626E−07   1.2918E−08 −1.7642E−10

In Table 2, k is a conic coefficient, and A4, A6, A8, A10, A12, A14,A16, A18 and A20 are aspheric surface coefficients.

IH: Image Height

y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶ +A18x ¹⁸ +A20x ²⁰  (1)

In the present embodiment, an aspheric surface of each lens surface usesthe aspheric surfaces shown in the above condition (1). However, thepresent disclosure is not limited to the aspherical polynomial formshown in the condition (1).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 10 according toEmbodiment 1 of the present disclosure. P1R1 and P1R2 represent theobject side surface and the image side surface of the first lens L1,respectively; P2R1 and P2R2 represent the object side surface and theimage side surface of the second lens L2, respectively; P3R1 and P3R2represent the object side surface and the image side surface of thethird lens L3, respectively; P4R1 and P4R2 represent the object sidesurface and the image side surface of the fourth lens L4, respectively;P5R1 and P5R2 represent the object side surface and the image sidesurface of the fifth lens L5, respectively; P6R1 and P6R2 represent theobject side surface and the image side surface of the sixth lens L6,respectively; and P7R1 and P7R2 represent the object side surface andthe image side surface of the seventh lens L7, respectively. The data inthe column “inflexion point position” refers to vertical distances frominflexion points arranged on each lens surface to the optic axis of thecamera optical lens 10. The data in the column “arrest point position”refers to vertical distances from arrest points arranged on each lenssurface to the optic axis of the camera optical lens 10.

TABLE 3 Number of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 1 1.625 P1R2 11.065 P2R1 0 P2R2 0 P3R1 2 0.455 1.425 P3R2 2 0.565 1.525 P4R1 2 0.4651.355 P4R2 1 1.595 P5R1 2 0.925 2.135 P5R2 2 0.535 2.345 P6R1 2 0.7552.245 P6R2 3 0.395 0.605 2.485 P7R1 1 1.625 P7R2 3 0.575 3.065 3.865

TABLE 4 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 P1R2 1 1.505 P2R1 0 P2R2 0 P3R1 1 0.765 P3R2 1 0.995P4R1 2 0.825 1.565 P4R2 1 1.835 P5R1 1 1.385 P5R2 2 1.245 2.475 P6R1 11.345 P6R2 0 P7R1 1 2.885 P7R2 1 1.225

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and470 nm after passing the camera optical lens 10 according toEmbodiment 1. FIG. 4 illustrates a field curvature and a distortion oflight with a wavelength of 555 nm after passing the camera optical lens10 according to Embodiment 1, in which a field curvature S is a fieldcurvature in a sagittal direction and T is a field curvature in atangential direction.

Table 13 below further lists various values of Embodiments 1, 2 and 3and values corresponding to parameters which are specified in the aboveconditions.

As shown in Table 13, Embodiment 1 satisfies the respective conditions.

In this embodiment, the entrance pupil diameter of the camera opticallens is 3.463 mm. The image height of 1.0H is 4.636 mm. The FOV (fieldof view) along a diagonal direction is 79.20°. Thus, the camera opticallens can provide an ultra-thin, wide-angle lens while having on-axis andoff-axis aberrations sufficiently corrected, thereby leading to betteroptical characteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1. Only differences therebetweenwill be described in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd νd S1 ∞ d0= −0.718 R1 2.357 d1= 0.983 nd1 1.5450 ν1 55.81R2 6.857 d2= 0.051 R3 4.145 d3= 0.251 nd2 1.6610 ν2 20.53 R4 3.308 d4=0.786 R5 21.940 d5= 0.252 nd3 1.6610 ν3 20.53 R6 8.796 d6= 0.064 R718.775 d7= 0.611 nd4 1.5450 ν4 55.81 R8 −23.297 d8= 0.438 R9 3.552 d9=0.362 nd5 1.6359 ν5 23.82 R10 2.933 d10= 0.289 R11 2.650 d11= 0.504 nd61.5450 ν6 55.81 R12 −20.298 d12= 0.603 R13 −4.673 d13= 0.506 nd7 1.5346ν7 55.69 R14 3.028 d14= 0.281 R15 ∞ d15= 0.210 ndg 1.5168 νg 64.17 R16 ∞d16= 0.510

Table 6 shows aspheric surface data of respective lenses in the cameraoptical lens 20 according to Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10R1 −4.6892E−02  6.6611E−04 7.8384E−04 5.2149E−04 −2.1918E−03 R2−2.2289E+01 −9.2953E−02 1.3935E−01 −1.4268E−01   1.0698E−01 R3 3.5549E+00 −1.2241E−01 1.3569E−01 −1.1084E−01   6.5051E−02 R4 3.6680E+00 −4.2079E−02 1.6439E−02 3.5814E−02 −9.6026E−02 R5  7.8725E+01−2.7595E−02 −2.9307E−02  4.9760E−02 −5.5939E−02 R6 −4.9233E+01−1.6649E−02 −4.0921E−02  6.4066E−02 −6.1746E−02 R7  4.5809E+01−2.9248E−02 4.8962E−04 −1.9829E−02   5.3981E−02 R8  9.7458E+01−6.0680E−02 5.2799E−02 −7.5183E−02   7.0255E−02 R9 −3.0469E+01 0.0000E+00 0.0000E+00 0.0000E+00  0.0000E+00 R10 −2.4236E+01 0.0000E+00 0.0000E+00 0.0000E+00  0.0000E+00 R11 −1.0331E+01−1.2787E−02 −1.5888E−02  9.6526E−03 −3.1958E−03 R12  3.9661E+01 4.4739E−02 −4.9936E−02  2.3192E−02 −6.6205E−03 R13 −5.7043E−01−8.5101E−02 2.2812E−02 −1.7247E−03  −9.0307E−05 R14 −1.7694E+01−4.7683E−02 1.4562E−02 −2.7242E−03   3.3256E−04 Aspherical surfacecoefficients A12 A14 A16 A18 A20 R1 2.6563E−03 −1.7205E−03   6.2619E−04−1.2247E−04   9.7258E−06 R2 −5.8199E−02  2.2003E−02 −5.4416E−037.8749E−04 −5.0421E−05 R3 −2.7235E−02  8.0571E−03 −1.6102E−03 2.0039E−04−1.1221E−05 R4 1.1813E−01 −8.8502E−02   4.0905E−02 −1.0721E−02  1.2225E−03 R5 2.9761E−02 −3.3851E−03  −4.1825E−03 1.9859E−03−2.6210E−04 R6 3.6270E−02 −1.5074E−02   4.7193E−03 −9.3760E−04  8.1898E−05 R7 −6.0387E−02  3.5154E−02 −1.1109E−02 1.8183E−03−1.2136E−04 R8 −4.3524E−02  1.7912E−02 −4.6806E−03 6.9868E−04−4.4804E−05 R9 0.0000E+00 0.0000E+00  0.0000E+00 0.0000E+00  0.0000E+00R10 0.0000E+00 0.0000E+00  0.0000E+00 0.0000E+00  0.0000E+00 R113.1062E−04 8.3927E−05 −2.8965E−05 3.4605E−06 −1.5267E−07 R12 1.1924E−03−1.3585E−04   9.6607E−06 −3.9972E−07   7.4960E−09 R13 2.2458E−05−1.0817E−06  −2.1156E−08 3.3148E−09 −7.8738E−11 R14 −3.1179E−05 2.3494E−06 −1.2548E−07 3.9464E−09 −5.3760E−11

Table 7 and Table 8 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 20 according toEmbodiment 2 of the present disclosure.

TABLE 7 Number of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 1 1.635 P1R2 11.165 P2R1 0 P2R2 0 P3R1 3 0.345 1.415 1.725 P3R2 2 0.515 1.485 P4R1 30.395 1.365 1.825 P4R2 2 1.635 1.955 P5R1 2 0.855 2.175 P5R2 2 0.5052.365 P6R1 2 0.755 2.285 P6R2 3 0.385 0.595 2.435 P7R1 2 1.645 3.555P7R2 3 0.605 3.205 3.825

TABLE 8 Number of Arrest point Arrest point Arrest point arrest pointsposition 1 position 2 position 3 P1R1 0 P1R2 1 1.565 P2R1 0 P2R2 0 P3R13 0.575 1.565 1.785 P3R2 1 0.865 P4R1 3 0.675 1.605 1.895 P4R2 2 1.8652.005 P5R1 1 1.395 P5R2 1 1.215 P6R1 1 1.355 P6R2 0 P7R1 1 2.945 P7R2 11.345

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and470 nm after passing the camera optical lens 20 according to Embodiment2. FIG. 8 illustrates a field curvature and a distortion of light with awavelength of 555 nm after passing the camera optical lens 20 accordingto Embodiment 2.

As shown in Table 13, Embodiment 2 satisfies the respective conditions.

In this embodiment, the entrance pupil diameter of the camera opticallens is 3.462 mm. The image height of 1.0H is 4.636 mm. The FOV (fieldof view) along a diagonal direction is 79.40°. Thus, the camera opticallens can provide an ultra-thin, wide-angle lens while having on-axis andoff-axis aberrations sufficiently corrected, thereby leading to betteroptical characteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1. Only differences therebetweenwill be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd νd S1 ∞ d0= −0.690 R1 2.355 d1= 1.000 nd1 1.5450 ν1 55.81R2 5.653 d2= 0.040 R3 3.857 d3= 0.271 nd2 1.6610 ν2 20.53 R4 3.342 d4=0.772 R5 31.396 d5= 0.230 nd3 1.6610 ν3 20.53 R6 13.460 d6= 0.065 R717.230 d7= 0.556 nd4 1.5450 ν4 55.81 R8 −97.635 d8= 0.497 R9 3.199 d9=0.321 nd5 1.6359 ν5 23.82 R10 3.024 d10= 0.341 R11 3.212 d11= 0.559 nd61.5450 ν6 55.81 R12 −22.759 d12= 0.581 R13 −4.65 d13= 0.475 nd7 1.5346ν7 55.69 R14 3.384 d14= 0.281 R15 ∞ d15= 0.210 ndg 1.5168 νg 64.17 R16 ∞d16= 0.494

Table 10 shows aspheric surface data of respective lenses in the cameraoptical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 R1 −5.5151E−02  7.3633E−04 −7.0579E−05   2.2909E−03 −4.4161E−03  R2−2.9507E+01 −1.2319E−01 1.9659E−01 −2.0636E−01 1.5541E−01 R3  2.8711E+00−1.5488E−01 1.8303E−01 −1.5779E−01 9.7293E−02 R4  3.6466E+00 −3.8980E−027.9666E−03  5.7588E−02 −1.3333E−01  R5  1.2000E+02 −6.3842E−03−4.1839E−02   2.0602E−02 2.6179E−02 R6 −1.2299E+01 −2.9581E−03−2.8539E−02  −1.5541E−02 6.0365E−02 R7  6.0305E+01 −4.0473E−025.8845E−02 −1.4463E−01 1.9682E−01 R8 −9.9000E+01 −7.6146E−02 7.9648E−02−1.0696E−01 9.5192E−02 R9 −2.1192E+01 −4.6255E−02 5.9662E−02 −4.4304E−021.9106E−02 R10 −1.7612E+01 −8.5747E−02 7.3597E−02 −3.8411E−02 1.1580E−02R11 −1.0638E+01 −1.3258E−02 −1.7009E−02   1.0497E−02 −3.2823E−03  R12 3.7556E+01  3.5838E−02 −4.3144E−02   1.9521E−02 −5.3313E−03  R13−6.4756E−01 −8.0914E−02 2.1283E−02 −1.6548E−03 −4.8776E−05  R14−1.8678E+01 −5.0838E−02 1.5887E−02 −2.9708E−03 3.3372E−04 Asphericalsurface coefficients A12 A14 A16 A18 A20 R1  4.3584E−03 −2.5363E−03  8.6549E−04 −1.6214E−04   1.2609E−05 R2 −8.3936E−02 3.1358E−02−7.6449E−03 1.0889E−03 −6.8503E−05 R3 −4.2913E−02 1.3352E−02 −2.7776E−033.4753E−04 −1.9048E−05 R4  1.5965E−01 −1.1824E−01   5.4070E−02−1.3972E−02   1.5622E−03 R5 −6.5907E−02 5.9915E−02 −2.8976E−027.3865E−03 −7.7001E−04 R6 −6.4279E−02 3.4507E−02 −1.0000E−02 1.5152E−03−9.6044E−05 R7 −1.5872E−01 7.7023E−02 −2.1902E−02 3.3637E−03 −2.1584E−04R8 −5.6203E−02 2.1942E−02 −5.4386E−03 7.7347E−04 −4.7568E−05 R9−5.3589E−03 8.9981E−04 −6.7845E−05 −1.8841E−06   4.7003E−07 R10−2.0908E−03 1.7910E−04  6.4599E−06 −2.7448E−06   1.6955E−07 R11 2.1018E−04 1.3130E−04 −3.8453E−05 4.4053E−06 −1.9073E−07 R12 8.9475E−04 −9.0818E−05   5.3702E−06 −1.6737E−07   2.0620E−09 R13 1.2135E−05 1.5626E−07 −1.0792E−07 6.6954E−09 −1.3521E−10 R14−2.4174E−05 1.1849E−06 −4.1072E−08 1.0538E−09 −1.6094E−11

Table 11 and Table 12 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 30 according toEmbodiment 3 of the present disclosure.

TABLE 11 Number of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 1 1.635 P1R2 30.475 0.745 1.145 P2R1 0 P2R2 0 P3R1 3 0.385 1.425 1.615 P3R2 3 0.5251.455 1.735 P4R1 3 0.425 1.365 1.815 P4R2 2 1.625 1.975 P5R1 2 0.9552.185 P5R2 2 0.575 2.355 P6R1 2 0.745 2.265 P6R2 1 2.435 P7R1 1 1.665P7R2 2 0.585 3.305

TABLE 12 Number of Arrest point Arrest point Arrest point arrest pointsposition 1 position 2 position 3 P1R1 0 P1R2 1 1.555 P2R1 0 P2R2 0 P3R11 0.595 P3R2 1 0.835 P4R1 3 0.715 1.605 1.875 P4R2 2 1.845 2.035 P5R1 21.485 2.315 P5R2 1 1.375 P6R1 1 1.315 P6R2 0 P7R1 1 3.065 P7R2 1 1.255

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and470 nm after passing the camera optical lens 30 according to Embodiment3. FIG. 12 illustrates field curvature and distortion of light with awavelength of 555 nm after passing the camera optical lens 30 accordingto Embodiment 3.

Table 13 below further lists various values of the present embodimentand values corresponding to parameters which are specified in the aboveconditions. Obviously, the camera optical lens according to thisembodiment satisfies the above conditions.

In this embodiment, the entrance pupil diameter of the camera opticallens is 3.494 mm. The image height of 1.0H is 4.636 mm. The FOV (fieldof view) along a diagonal direction is 78.68°. Thus, the camera opticallens can provide an ultra-thin, wide-angle lens while having on-axis andoff-axis aberrations sufficiently corrected, thereby leading to betteroptical characteristics.

TABLE 13 Parameters and Embodi- Embodi- Embodi- Conditions ment 1 ment 2ment 3 f4/f 2.716 3.451 4.799 f6/f7 −1.178 −1.290 −1.450 d8/d9 1.4031.210 1.548 f 5.540 5.539 5.591 f1 5.758 6.098 6.670 f2 −18.449 −27.905−47.631 f3 −22.638 −22.188 −35.514 f4 15.046 19.113 26.832 f5 −20.224−34.025 −305.158 f6 4.262 4.321 5.188 f7 −3.617 −3.349 −3.578 f12 7.4967.209 7.296 Fno 1.600 1.600 1.600

It can be appreciated by one having ordinary skill in the art that thedescription above is only embodiments of the present disclosure. Inpractice, one having ordinary skill in the art can make variousmodifications to these embodiments in forms and details withoutdeparting from the spirit and scope of the present disclosure.

What is claimed is:
 1. A camera optical lens, sequentially comprising,from an object side to an image side: a first lens having a positiverefractive power; a second lens having a negative refractive power; athird lens having a negative refractive power; a fourth lens having apositive refractive power; a fifth lens having a negative refractivepower; a sixth lens having a positive refractive power; and a seventhlens having a negative refractive power, wherein the camera optical lenssatisfies following conditions:1.80≤f4/f≤5.00;−1.50≤f6/f7≤−1.00; and1.20≤d8/d9≤1.60, where f denotes a focal length of the camera opticallens; f4 denotes a focal length of the fourth lens; f6 denotes a focallength of the sixth lens; f7 denotes a focal length of the seventh lens;d8 denotes an on-axis distance from an image side surface of the fourthlens to an object side surface of the fifth lens; and d9 denotes anon-axis thickness of the fifth lens.
 2. The camera optical lens asdescribed in claim 1, further satisfying a following condition:−0.80≤(R7+R8)/(R7−R8)≤−0.10, where R7 denotes a curvature radius of anobject side surface of the fourth lens; and R8 denotes a curvatureradius of the image side surface of the fourth lens.
 3. The cameraoptical lens as described in claim 1, further satisfying a followingcondition:3.00≤(R3+R4)/(R3−R4)≤15.00, where R3 denotes a curvature radius of anobject side surface of the second lens; and R4 denotes a curvatureradius of an image side surface of the second lens;
 4. The cameraoptical lens as described in claim 1, further satisfying followingconditions:0.52≤f1/f≤1.79;−4.86≤(R1+R2)/(R1−R2)≤−1.19; and0.07≤d1/TTL≤0.22, where f1 denotes a focal length of the first lens; R1denotes a curvature radius of an object side surface of the first lens;R2 denotes a curvature radius of an image side surface of the firstlens; d1 denotes an on-axis thickness of the first lens; and TTL denotesa total optical length from the object side surface of the first lens toan image plane of the camera optical lens along an optic axis.
 5. Thecamera optical lens as described in claim 1, further satisfyingfollowing conditions:−17.04≤f2/f≤−2.22; and 0.02≤d3/TTL≤0.06, where f2 denotes a focal lengthof the second lens; d3 denotes an on-axis thickness of the second lens;and TTL denotes a total optical length from an object side surface ofthe first lens to an image plane of the camera optical lens along anoptic axis.
 6. The camera optical lens as described in claim 1, furthersatisfying following conditions:−12.70≤f3/f≤−2.67;1.17≤(R5+R6)/(R5−R6)≤4.73; and0.02≤d5/TTL≤0.06, where f3 denotes a focal length of the third lens; R5denotes a curvature radius of an object side surface of the third lens;R6 denotes a curvature radius of an image side surface of the thirdlens; d5 denotes an on-axis thickness of the third lens; and TTL denotesa total optical length from an object side surface of the first lens toan image plane of the camera optical lens along an optic axis.
 7. Thecamera optical lens as described in claim 1, further satisfyingfollowing conditions:−109.16≤f5/f≤−2.43;3.34≤(R9+R10)/(R9−R10)≤53.34; and0.02≤d9/TTL≤0.08, where f5 denotes a focal length of the fifth lens; R9denotes a curvature radius of the object side surface of the fifth lens;R10 denotes a curvature radius of an image side surface of the fifthlens; d9 denotes an on-axis thickness of the fifth lens; and TTL denotesa total optical length from an object side surface of the first lens toan image plane of the camera optical lens along an optic axis.
 8. Thecamera optical lens as described in claim 1, further satisfyingfollowing conditions:0.38≤f6/f≤1.39;−1.54≤(R11+R12)/(R11−R12)≤−0.50; and0.04≤d11/TTL≤0.13, where R11 denotes a curvature radius of an objectside surface of the sixth lens; R12 denotes a curvature radius of animage side surface of the sixth lens; d11 denotes an on-axis thicknessof the sixth lens; and TTL denotes a total optical length from an objectside surface of the first lens to an image plane of the camera opticallens along an optic axis.
 9. The camera optical lens as described inclaim 1, further satisfying following conditions:−1.31≤f7/f≤−0.40;0.07≤(R13+R14)/(R13−R14)≤0.32; and0.03≤d13/TTL≤0.11, where R13 denotes a curvature radius of an objectside surface of the seventh lens; R14 denotes a curvature radius of animage side surface of the seventh lens; d13 denotes an on-axis thicknessof the seventh lens; and TTL denotes a total optical length from anobject side surface of the first lens to an image plane of the cameraoptical lens along an optic axis.
 10. The camera optical lens asdescribed in claim 1, further satisfying a following condition:5.77≤f12/f≤9.00, where f12 denotes a combined focal length of the firstlens and the second lens.